[En-Nut-Discussion] Complete newbie...

[Pearless]

As an aside,

I was looking for information on the memory mapping of the EtherNut 2.

This seems to be the only references I could find to the memory mapping in
the mailing list and website.

I assume that this is still current, and if I use 0xFE00-0xFEFF inclusive
for a daughter board I have designed (it can be jumpered into any block as I
decode A8-A15) that this will not cause a conflict?

Cheers Douglas

-----Original Message-----
From: en-nut-discussion-admin at egnite.de
[mailto:en-nut-discussion-admin at egnite.de] On Behalf Of Harald Kipp
Sent: Sunday, 17 August 2003 9:33 p.m.
To: en-nut-discussion at egnite.de
Subject: Re: [En-Nut-Discussion] Complete newbie...

Radek,

There's no limitation using any memory addresses from 0x8000 to
0x82FF and 0x8320 to 0xFFFF.

May be there's some kind of address decoder timing problem, so
that 0xE000 gets unintendently selected. How about adding delay
cycles? More infos are given in the ATmega128 data sheet.

Sure, there may be a bug in the software, but unlikely. Ethernut 2
uses all addresses upto 0xBFFF, the LAN91C111 is located at 0xC000
and the bank select register occupies 0xFF00 upto 0xFFFF. It uses
the same software, just the NIC driver has been replaced.

Harald

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